The Great Blue Hole is a submarine sink hole of Belize. The hole is 1000 meters and 400 meters deep. It was formed as a mineral cave during the last glaciation.
The Mirny Diamond Mine is 525m deep and has a width of 1200m. It was the first and one of the biggest rhombus touch in the Soviet Union. It is now abandoned. While it was still in operation, it will take two hours for trucks to drive from the top to the bottom of the mine.
The Diavik Mine is a mine in the Northwest Territories in Canada. Mine provides 8 million carats or about 1600 kg (3500 pounds) of diamonds annually.
In 2007, a canyon 300 feet deep sink hole a dozen houses in Guatemala – killing 2 and causing thousands to be evacuated. The sink hole was caused by the rains and an subversive sewage flow.
The Udachnaya Pipe is a rhombus mine in Russia. The owners of my plans to terminate its activities in 2010 – in favor of subversive mining. The mine was exposed in 1955 and is over 600 meters deep.
Chuquicamata is an open hole copper mine in Chile. This is mine with the biggest total manufacture of copper in the world – but not the biggest copper mine. The mine is over 850 meters deep.
